dry ice temperature. Initial rate studies at −25 °C indicate that high concentrations of any reagent can lead to either complete or partial catalyst deactivation. Under strongly reducing conditions, iron seems to form less active complexes that only slowly re-enter the catalytic cycle, possibly through bimolecular coupling of iron(II) complexes. Computational studies support the experimental observations
                                    已经在低温条件下研究了标题反应。即使在
干冰温度下,也可以与活性基材偶联。-25°C下的初始速率研究表明,任何试剂的高浓度均可导致催化剂完全或部分失活。在强烈还原的条件下,
铁似乎形成活性较低的络合物,可能仅通过
铁(II)络合物的双分子偶联而缓慢地重新进入催化循环。计算研究支持实验观察,并表明还原消除无法达到低于+ I的氧化态。